ORIGINAL: bjr_93tz
David I know where your coming from, lighter flys better. With modern gear and construction you can knock out some weight and it's a circular thing.
less weight = smaller motor=less fuel=lighter weight=better performance
I don't quite look at it that way although what you say is true. We all know that light models are desirable. I look at it from a prop size and rpm standpoint in relation to the type of model I want to power. Helis, EDF's, pylon and classics benefit from elastic high KV motors. 3D, War birds, scale and modern F3A models benefit from the opposite. Are we looking for prop torque or pitch speed? The two require different motor types.
EDIT: Actually when looking at eness76-RCU's numbers we're fairly similiar He's got 6S 5Ah pack vs my intended 10s 3Ah (same total energy capacity) and his 650Kv on 6S works out to be about 390kv on 10S (mine's 400Kv) and I'm down about 1k rpm static with 2 extra inches of pitch...
Without wanting to continue harping on the subject, what you say is true but it's also akin to saying "all roads lead to Rome". The issue is whether one wants to take the St Bernard tunnel or cross the Alps - they're two very different approaches. Power is power but it's how it's wielded that matters...
David